Hey guys so my baby is 3mo old and completely formula fed. We have been using the Kirkland brand of formula for over a month now because he has seemed to tolerate that one the best. Over the past few days he has been vomiting up a ton. Today he has pretty much thrown up everything he has eaten. He has had a cold this past week and been teething so I'm not sure if that has to do with anything. I talked to the ped about it and they just told me to keep him upright longer and burp him more often. Does this sound like something just related to his cold or could it be a sensitivity to formula? Help please my baby is so fussy and sad right now:(